About re apply for visa

Hellow
Its puja frm dhaka. I got admitted to Algoma University on September 2011 and was suppose to join classes then but my visa got rejected. The reason they showed me was I did not have sufficient fund to maintain myself during my period of stay there and also the purpose of visit.
My sponsors were my mama and my dad. The total amount was 33 lakhs (bdt).

Also there was another problem i found later that my offer letter to Algoma was conditional because i am a credit transfer student and Algoma was waiting for my final transcript from my current university. As my semester was running then so i was not able to provide the final transcript; and i did it later. my per year tuition fees is 12910 cad. I have paid my 1 year tuition fees too.
After having the refusal i have applied for a deferral and transferred to Jan 2012 semester. Now i have managed all my papers again and my sponsors are my elder brother (living at Australia) and my father.

Algoma has accepted my 39 credits. The total credit is 120. So that means i have left 81 credits more to go. Which will take near by 2 and a half year to complete.

All i am worried about is, after having a rejection of visa what will be the chances of getting the visa this time? And is the fund enough to show? Reply me soon please.

Thank you